Results 21 to 30 of about 15,445 (250)

Seasonal and Interannual Dynamics of Pelagic Rotifers in a Tropical, Saline, Deep Lake

open access: yesDiversity, 2022
This is the first long-term study (monthly samples at two 4-year intervals: 1998 to 2001 and 2013 to 2016) on rotifers in a saline, deep lake. The pelagic rotifer assemblage of Lake Alchichica is simple and comprised by two species, both new and most ...
Rocío Fernández   +4 more
doaj   +1 more source

Fish larval nutrition and feed formulation: knowledge gaps and bottlenecks for advances in larval rearing [PDF]

open access: yes, 2013
Despite considerable progress in recent years, many questions regarding fish larval nutrition remain largely unanswered, and several research avenues remain open.
Applebaum   +251 more
core   +3 more sources

Effect of salinity stress on the life history variables of Branchipus schaefferi Fisher, 1834 (Crustacea: Anostraca) [PDF]

open access: yes, 2005
BACKGROUND: Freshwater anostracans inhabit ephemeral water bodies in which as the water level decreases due to evaporation the salt concentration increases. Thus, for most anostracans salinity becomes the major stress factor.
Beladjal, Lynda   +4 more
core   +2 more sources

TOXICITY OF PREDNISOLONE, DEXAMETHASONE AND THEIR PHOTOCHEMICAL DERIVATIVES ON AQUATIC ORGANISMS [PDF]

open access: yes, 2004
Light exposure of aqueous suspensions of prednisolone and dexamethasone causes their partial phototransformation. The photoproducts, isolated by chromatographic techniques, have been identified by spectroscopic means.
DELLA GRECA, MARINA   +6 more
core   +1 more source

THE TRANSFORMATION OF BRACHIONUS PALA INTO BRACHIONUS AMPHICEROS BY SODIUM SILICATE [PDF]

open access: yesThe Biological Bulletin, 1916
1. Socium silicate added to the culture medium in which the rotifer Brachionus pala was living caused nearly all and in many cases caused all of the descendants to form two additional posterior lateral spines and also to increase the size of the other spines thus forming Brachionus amphiceros.2.
openaire   +1 more source

Checklist of the planktonic rotifer fauna in the active floodplain area of the Danube (1843-1806, 1669 and 1437-1489 rkm) [PDF]

open access: yesOpuscula Zoologica Instituti Zoosystematici et Oecologici Universitatis Budapestinensis, 2009
A checklist of Rotifera containing 84 taxa from the main arm and the active floodplain of the River Danube is provided. Beauchampiella eudactylota Gosse, 1886; Brachionus forficula forficula (Wierzejski, 1891); Brachionus quadridentatus mirabilis (Daday,
Schöll, K., Kiss, A.
doaj  

The effect of seasonality on the structure of rotifers in a black-water shallow lake in Central Amazonia

open access: yesAnais da Academia Brasileira de Ciências, 2014
Rotifers have often been used as indicators of sudden changes in physical and chemical features of the aquatic environment. Such features vary greatly during flood pulse events in small lakes connected to major floodplains.
CLARICE C. NOVA   +5 more
doaj   +1 more source

Rotiferan Hox genes give new insights into the evolution of metazoan bodyplans [PDF]

open access: yes, 2017
The phylum Rotifera consists of minuscule, nonsegmented animals with a unique body plan and an unresolved phylogenetic position. The presence of pharyngeal articulated jaws supports an inclusion in Gnathifera nested in the Spiralia.
Fröbius, Andreas C., Funch, Peter
core   +1 more source

Effects of Brachionus calyciflorus and Brachionus rubens on a manipulated freshwater microbial community [PDF]

open access: yesJournal of Plankton Research, 2002
In situ grazing experiments were conducted in a highly eutrophic lake during May and June 1998 to examine species-specific predatory effects of the closely related rotifers Brachionus calyciflorus and Brachionus rubens on the microbial community (
openaire   +1 more source

Deepor Beel revisited: new records of rotifers (Rotifera: Eurotatoria) with remarks on interesting species

open access: yesJournal of Threatened Taxa, 2011
Plankton samples collected (April 2009 - March 2010) from Deepor Beel, a Ramsar site, revealed 21 species of the Phylum Rotifera belonging to 12 genera and eight families as new records.
B.K. Sharma, S. Sharma
doaj   +1 more source

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